Hcf Unit Nvm R/W Failure; Tray 5 Hcf Communication Failure - Lexmark X850e Service Manual

Step Check
7 Check the HCF feed lift motor for proper connection.
Is the above motor connected properly?
8 Perform a print test.
Does the error still occur?
9 Perform a print test.
Does the error still occur?

945.01 HCF unit NVM R/W failure

Step Check
1 Turn the main switch off and on several times.
Does the error still occur when the power is on?
2 Check the HCF controller card assembly and printer
engine card assembly for proper connection.
Are the connectors connected to the HCF controller
card assembly and are connectors P414 and P415 on
the printer engine card assembly connected properly?
3 Perform a print test.
Does the error still occur?
4 Perform a print test.
Does the error still occur?

980.01 Tray 5 HCF communication failure

Step Check
1 Turn the main switch off and on several times.
Does the error still occur when the power is on?
Yes No
Replace the HCF Replace the
feed lift motor. connection.
"HCF feed lift
Go to
motor removal" on
page 4-58.
Replace the HCF Problem solved.
controller card
assembly.
"HCF
Go to
controller card
assembly removal"
on page 4-78.
Go to step 9.
Replace the printer Problem solved.
engine card
assembly.
Refer to the Printer
Service Manual.
Yes No
Go to step 2. Problem solved.
Go to step 3. Replace the
connection.
Replace the HCF Problem solved.
controller card
assembly.
Go to "HCF
controller card
assembly removal"
on page 4-78.
Go to step 4.
Replace the printer Problem solved.
engine card
assembly.
Refer to the Printer
Service Manual.
Yes No
Go to step 2. Problem solved.
Diagnostic information
7500-XXX
2-45